Color Custom Centrifugal Fan Blower High Pressure Industrial Air Blower

Centrifugal fans and blowers high pressure air blower high efficiency fan industrial blower fan exhaust duct fan

Centrifugal blower cleaning, disassembly and assembly shall meet the following requirements:

1. All parts and auxiliary equipment should be cleaned clean, and the anti-rust grease of the joint surface should be coated with a lubricating layer to protect it (except for special requirements);

2. The vertical central split surface of the casing should not be removed and cleaned (the machine with cylinder structure shall be implemented according to the provisions of the equipment technical documents). The diffuser, reflux device and bearing box may not be removed during cleaning;

3. the oil pump, filter, oil cooler and safety valve in the lubrication system and the sealing system should be removed and cleaned. Except for the oil cooler, its slope may not be tested separately.

4.The gas regulating device and gas cooling system should be disassembled and washed, and the pressure treatment can generally be tested; If there are special requirements, the tightness test should be carried out according to the provisions of the equipment technical documents.

Centrifugal blower to find peacetime, should meet the following requirements:

First, when the direct connection unit is found, the longitudinal level should be measured on the axis, and the level should not exceed 0.03/1000; The horizontal level should be measured on the surface of the casing, and the level should not exceed 0.1/1000;

Two. When the unit with the accelerator is found, the vertical level is measured on the shaft neck, and the level should not exceed 0.02/1000; The horizontal level should be measured on the horizontal middle surface of the lower casing (see Figure V-2.1), and the non-level should not exceed 0.1/1000; The alignment of the whole unit is generally based on the accelerator. Article 32 When installing the base or the whole unit, the following requirements should be met: First, the pair of inclined pad iron should be selected according to the size of the unit. For the unit with a speed of more than 3000 RPM, the contact area between each pad iron, between the pad iron and the foundation and the base should not be less than 70% of the joint surface, and the local gap should not be more than 0.05 mm; Second, each group of pad iron should be placed in groups after selection, and marked to prevent confusion;

Iii. If the base is composed of several pieces, the position of the anchor bolts such as the casing and bearing seat should be checked according to the provisions of the equipment technical documents.

Iv. The gap between the guide key (horizontal flat key or vertical flat key) on the base and the body should be uniform and comply with the provisions of the equipment technical documents. If not specified, the interference in the assembly keyway should be 0.01 ~ 0.02 mm; In the corresponding sliding keyway, the subordinate C1+C2 of the gap between the two sides should be 0.04-0.08 mm, the top gap C should be 0.5-1.0 mm, and the countersunk screw is 0.3-0.5 mm below the healthy A.

When the bearing housing and the lower casing are mounted on the base, the following requirements shall be met:

1. For the unit with the bearing housing and the lower casing as the whole, the lower half of the body should be installed on the base, and at the same time, the bearing hole is used as the basis for leveling (the unit with the growth rate is generally based on the growth rate for the above work);

Second, the bearing seat and the lower casing are not one of the units, the bearing seat should be installed on the base, at the same time, the bearing hole is used as the benchmark for leveling, and the different axial degree of the lower casing and the spindle axis line is corrected (the unit with the accelerator is generally based on the accelerator for the above work);

Iii. The bolts connecting the bearing seat with the guide key or the anchor jaw on the lower casing with the base should be fixed correctly. The clearance between the bolt and the screw hole and the clearance between the nut and the frame should comply with the provisions of the equipment technical documents.

Four, between the bearing seat and the base, or between the anchor jaw of the lower casing, the bearing seat and the base, should be closely fitted, before tightening the bolt, check the local gap with a stopper, and the unit with a speed of not more than 3000 RPM is not more than 0.05 mm, and the unit with a speed higher than 3000 RPM is not more than 0.04 mm. Note: The frame refers to the anchor claw of the bearing or the lower casing.

The bottom surface of the accelerator should be closely fitted to the base, and the local gap should not be greater than 0.04 mm before the bolt is tightened. Article 35 The contact arc surface, top clearance and side clearance between the bearing pad and the shaft neck shall comply with the provisions of the equipment technical documents. If a certain index does not meet, it is allowed to repair and scratch, but when repairing and scraping the bearing pad, attention should be paid to correct the different axiality between the rotor and the casing sealing device, and make the gap between the rotor and the sealing device conform to the provisions of the equipment technical documents (the tiltable tile shaft should conform to the provisions of the equipment technical documents). Article 36 The axial and radial jump supports of each part of the rotor (spindle, impeller, balance disc, thrust disc and coupling, etc.) shall not exceed the provisions of the equipment technical document. Article 37 The joint surfaces of the upper and lower casing shall be tight, and the allowable value of local clearance shall conform to the provisions of the equipment technical documents before tightening the bolts.

In the absence of provisions, the following requirements shall be met:

First, the working pressure is lower than or equal to 10 kg force/cm 2, the gap should not be greater than 0.12 mm (except sintering blower); When the working pressure is higher than 10 kg force/cm 2, the gap should not be greater than 0.08 mm;

Ii. The connection bolts should not be damaged. If there is sealing filler or coating between the joint surfaces, it should be filled or coated evenly according to the provisions of the equipment technical documents.

When the accelerator is assembled, the following requirements shall be met (the planetary gear accelerator shall be implemented according to the provisions of the equipment technical documents) :

I. The gaps of each part of the bearing (top gap, side gap, etc.), the contact arc surface and the contact points per unit area shall comply with the provisions of the equipment technical documents, and shall be scratched when necessary;

Second, the center distance, non-parallelism, tooth clearance and contact point between the shafts of the gear group shall conform to the provisions of the equipment technical documents;

Iii. The joint surface of the upper and lower shells of the gearbox should be close, and the local gap should not be greater than 0.06 mm before the bolts are tightened, and the connecting bolts should not be injured. Article 39 The interference value between the upper tile back and the bearing cover (or gland cover) and the contact surface between the lower tile back and the bearing hole shall conform to the provisions of the equipment technical documents. If there is no regulation, the interference value is generally 0.03-0.07 mm, and the contact surface shall generally not be less than 75%. Article 40 When the motor, steam turbine and gas turbine are connected with the accelerators, blowers and compressors, the different axialities shall conform to the provisions of the equipment technical documents.

Key Features 

• Impeller diameter: 90~3500 mm 
• Speed of mainshaft: 560~2900 rpm
• Pressure range: 3000~25425 Pa
• Flow range: 1297~43305 m3/h
• Air Temperature: 20~1000 Celsius degree

• Material: Cast Iron, Carbon Steel, Stainless Steel.

• Efficiency: 70%-90%